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CVE-2021-47109 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: neighbour: allow NUD_NOARP entries to be forced GCed IFF_POINTOPOINT interfaces use NUD_NOARP entries for IPv6. It's possible to fill up the neighbour table with enough entries that it will overflow for valid connections after that. This behaviour is more prevalent after commit 58956317c8de ("neighbor: Improve garbage collection") is applied, as it prevents removal from entries that are not NUD_FAILED, unless they are more than 5s old.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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Hyperlink Resource
https://git.kernel.org/stable/c/7a6b1ab7475fd6478eeaf5c9d1163e7a18125c8f
https://git.kernel.org/stable/c/d17d47da59f726dc4c87caebda3a50333d7e2fd3
https://git.kernel.org/stable/c/d99029e6aab62aef0a0251588b2867e77e83b137
https://git.kernel.org/stable/c/ddf088d7aaaaacfc836104f2e632b29b1d383cfc

Weakness Enumeration

CWE-ID CWE Name Source

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47109
NVD Published Date:
03/15/2024
NVD Last Modified:
03/17/2024
Source:
kernel.org